Pulley.



E. J. CUNNINGHAM.

PULLEY.

' APPLICATION FAILED MALZS, 1909.

Patented July 1,2, 1910.

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J. C NNNINGHAM.

NIJLLENI APPLIUATION FILED HAR. 28, 1909- Pa'tentgd July 1,2, 1910.

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EDWARD J'. CUNNINGHAM, OF CANTON, MASSACHUSETTS.

PULLEY.

To all whom 'it may concern:

Be it known that I, EDWARD J. CUNNING- HAM, a citizen of the UnitedStates, residing at Canton, in the county of Norfolk and State ofMassachusetts, have invented new and useful Improvements in Pulleys, ofwhich the following is a specification.

This invention relates to the class of ournal boxes, pulleys andshafting, and more particularly to the subclass of loose pulleys andlubricators therefor, and has for an object to provide a pulley arrangedto contain a quantity of oil or other lubricant, and to provide a novelform of collector adapted to collect oil and to convey it to the shaftupon which the pulley is mounted.

A further obj ect of my invention is to provide a pulley comprisingsectional elements provided with hubs to be mounted upon a shaft, and toprovide the sectional elements with means so that when oil flows beyondthe outer extremities of the hubs it will by centrifugal force becarried outwardly toward the vertical axis of the pulley to be againdeposited into the collector and afterward conveyed to the shaft.

Other objects and advantages will be ap parent as the nature of theinvention is better set forth, and it will be understood that changeswithin the scope of the claim may be resorted to without departing fromthe spirit of the invention.

In the drawings, forming a portion of this specification and in whichlike numerals of reference indicate similar parts in the several viewsFigure 1 is a vertical section through the pulley. Fig. 2 is a detailsection taken on the line 2 2 of Fig. 1. Fig. 3 is a fragmentaryperspective view of one of the oil wipers. FiO'. 4 is a side elevationof one of the pulley elements. Fig. 5 is a detail section taken throughone of the oil wipers.

Referring now more particularly to the drawings, there is shown a shaft1 of the usual construction upon which my improved pulley 2 is looselymounted, and as shown, the said pulley comprises elements 3 and 4 eachhaving its outer end closed by ahead 6. The element 2 is provided withthe usual annular belt flange 7, and the said section is provided with acentrally located annular flange 8 connected to the ange 7 by means ofspokes 9. The flange 8 is connected to the head 6 of its element bymeans of a hollow conical portion 10, and secured by means Speceaton ofLetters Patent.

Application filed. March 23, 1909.

Patented July 12, 1910.

serial No. 485,301.

of arms or spokes 11 to the portion 10 is a hub 12 which is preferablytapered from its outer toward its inner end as clearly illustrated inFig. 1 of the drawings. The element 3 is provided with an annular ange13 arranged for interlocking engagement with an annular rabbeted portion14 formed in the flange 8 of the element 4. The element 3 is providedwith a flat annular portion 15 disposed in parallel relation to asimilar portion 15a of the element 4. The head 6 ofthe element 3 isconnected to the flat annular portion 15 by means of a conical ortapered portion 16 of hollow form and preferably identical inconstruction to the portion l0 of the element 4. The element 3 isprovided with a hub 17 similar to the hub 12, and as shown, these hubsare spaced at their inner ends from each other and are provided withalining grooves 18. It will be clearly seen upon reference to Fig. 1 ofthe drawings that the outer ends of the hubs are spaced from the heads 6and the purpose of this construction will be hereinafter more fullyexplained. The construction just described is such that the hub isprovided with an oil or lubricant chamber 19 which communicates with anannular chamber 20.

An oil or lubricant collect-ing element or member is shown at 21 which1s preferably constructed in the form of a sleeve or wheel having anannular V-shaped groove 22. The hub portion 23 of the collector isprovided with a shaft receiving passage 24, and to securely hold thecollector in an operative position upon the shaft 1, I provide the hubportion 23 with an adjusting screw 25 adapted to be engaged with theshaft 1 as is obvious.

The construction of the collector is suoli that it is disposed in thechamber 20 formed by the elements 3 and 4 of the pulley. The hub portion23 of the collector has extending therefrom a plurality of radial wings26, each of said wings being provided with an outwardly extendingelongated finger 27. By providing the collector with the radial wings 26it is obvious that I provide a plurality of pockets 28 which areseparated from each other. In constructing the collector I arrange thefingers 27 out of line with each other. The hub portion 23 of thecollector is provided with longitudinally extending grooves 29 thatcommunicate with passages 30 formed in the hub portion and which open attheir outer ends into the groove 22. As shown, I preferably provide thehub 23 with a pair of such passages 30 for each wing 26 and arrange themso that one lies adjacent to each side of the wing.

The elements 3 and 4 are each provided with an oil wiper 31 comprising ahollow exteriorly threaded screw 32 having alining slots 33 in which amember 34 is slidably mounted which latter is preferably formed fromBabbitt metal. rIhe wipers are operatively engaged with the elements 3and 4 before said elements are secured together. The member 34 isprovided with a cylindrical stud 35 disposed in the hollow portion ofthe screw 32 and engaged by a helical expansion spring 36 adapted tonormally hold the member 34 yieldingly engaged with the shaft 1.

I/Vhen the pulley revolves, the shaft and collector are stationary ornearly so, and the object of numerous radial wings is that one at leastwill remain upright or nearly so, so that oil coming in contact withsame will flow down by gravity to the shaft. In view of the fact thatthe grooves or passages 18 are located longitudinally of the shaft 1,oil or lubricant discharged into the passages 29 will be free to Howinto the grooves or passages 18 to thoroughly lubricate all frictionalpoints of contact between the shaft and the pulley thus allowing aperfect operation of the latter. Should oil from the shaft 1 flow to apoint beyond the outer ends of the hubs 12 and 17, the oil will becarried by centrifugal force toward the portions 10 and 16 of theelements 4 and 3 and carried forwardly to be discharged into the chamber20, whereupon, the oil is free to be deposited into the groove 22 to beagain discharged to the shaft 1. By providing the wipers 31 at panionmembers having closed head portions apertured for the reception of theshaft, said members having centrally located chamberforming portions,hubs supported by the members and apertured for the reception of theshaft, said hubs having longitudinally extending channels formed thereinand opening directly onto the shaft, an oil collector fixed to the shaftand disposed between the inner ends of the said hubs, said collectorhaving a grooved peripheral portion and having a series of channelswhich open at their inner ends into the channels in said hubs andopening at their outer ends into the said peripheral groove of thecollector, wings extending between the walls of the annular' groove ofsaid collector, and fingers extendino` from the wings and arrangedradially of the shaft and alternately alining with each other andextending directly into the said central chamber.

In testimony whereof I affix my signature in presence of two witnesses.

EDVARI) J. CUNNINGHAM.

Witnesses:

WILLIAM CUNNINGHAM, GEO. M. YOUNG.

